The regulation of biopesticides takes place within a regulatory system that was designed for the regulation of synthetic (chemical) pesticides. Hence, the system has a number of features that did not make it amenable to the registration of biological pesticides and a number of adjustments have had...

The horizontal (very small scale distribution, small scale distribution, medium scale distribution, large scale distribution and macro distribution) and vertical distribution patterns of nematode species are discussed in this chapter. Approaches to, and guidelines in, sampling for the evaluation of ...

Results are presented of an experiment conducted to analyse the distribution and proportion of maize production in relation to arable land in France, Germany, Italy, Austria, The Netherlands, Belgium, Switzerland and Luxembourg. The obtained data would form the basis for modelling yield losses and...

This chapter presents an analysis of the host specificity of herbivorous insects and tests the hypothesis that proportionally more specialist herbivores are found in the native range of Heracleum mantegazzianum, Western Greater Caucasus. Based on field surveys on H. mantegazzianum carried out in...

This chapter describes a number of techniques that have been developed and proved useful for identifying key components and relationships associated with crop pest problems: historical profiles, seasonal or damage profiles, interaction matrices and decision trees. This chapter focuses on the...